Convert a Polar Equation to a Polar Equation (Horizontal and Vertical Line)

This video explains how to convert the polar equations of a vertical line and horizontal line to a Cartesian equation.


Simplify Trig Expression: Quotient with Sines and Cosines and Double Angle

This video explains how to simplify or change for form of a trigonometric expression to select and equivalent expression or determine a trigonometric identity.